Spring seat for test stand



FIG. 1 is a perspective view of a spring seat for test stand showing my new design.

FIG. 2 is a top plan view thereof, the bottom being flat, plain and unornamented;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof. 

The ornamental design for a spring seat for test stand, as shown and described. 